Re: a question about qwtplot

[<gve...@gr...>]

On Mon, 15 Mar 2004 21:19:48 +0000, may chien wrote
> Hi everybody,
> 
> I am using Qwtplot to implement a small program.
> Since my data are categorical variables in X axis, I need to make 
> the meter invisible in X axis and put some label for each 
> categorical variable. For example, the first variable is math score 
> and the second variable is science score. And the label for X axis 
> should be only math and science not the numerical values. Does 
> anyone know hot to do that?
>
Look at examples/cpuplot/cpuplot.cpp where a TimeScaleDraw class
is derived from the QwtScaleDraw class to customize the drawing
of the tick labels. You could do something similar by replacing
the numerical values 1, 2, .. by 'math', 'science', .... 
> 
> I tried to use marker but failed.
> The marker just didn't showup at all.
> Does anyone have the code for showing how to use the marker 
> functions in Qwtplot?
>
This is strange, what version of Qwt are you using?
(my first answer assumes that your Qwt is new enough)

Try to demonstrate your problem in 1 single small file. Probably
you will realize what you have done wrong. If not you may have
found a bug, but to be sure we need your small file. 

Gerard